Configuration

Global site parameters

On top of Hugo global configuration, the Relearn theme lets you define the following parameters in your config.toml (here, values are default).

Note that some of these parameters are explained in details in other sections of this documentation.

[params]
# If an option value is said to be not set, you can achieve the same behavior
# by given it an empty string value.

###############################################################################
# Hugo
# These options usually apply to other themes aswell.

# The author of your site.
# Default: not set
# This will be used in HTML meta tags, the opengraph protocol and twitter
# cards.
# You can also set `author.email` if you want to publish this information.
author.name = "Sören Weber"

# The social media image of your site.
# Default: not set
# This is used for generating social media meta information for the opengraph
# protocol and twitter cards.
# This can be overridden in the page's frontmatter.
images = ["images/hero.png"]

# The description of your site.
# Default: not set
# This is used for generating HTML meta tags, social media meta information
# for the opengraph protocol and twitter cards.
# This can be overridden in the page's frontmatter.
description = "Documentation for Hugo Relearn Theme"

###############################################################################
# Relearn Theme
# These options are specific to the Relearn theme.

#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# Variants
# These options set your color variant.

# Used color variants.
# Default: "auto"
# This sets one or more color variants, available to your readers to choose
# from. You can either set a single value eg. "zen-light" or an array like
# [ "neon", "learn" ]. If the array has more than one entry, a variant selector
# is shown in the lower part of the menu. The first entry in the array is the
# default variant, used for first time visitors.
# The theme ships with the following variants: "auto", "relearn-bright",
# "relearn-light", "relearn-dark", "zen-light", "zen-dark", "neon", "learn",
# "blue", "green", "red". The auto variant is somewhat special. See the
# option for themeVariantAuto below.
# You can also define your own variants. See the docs how this works. Also,
# the docs provide an interactive theme generator to help you with this task.
themeVariant = [ "auto", "relearn-bright", "relearn-light", "relearn-dark", "zen-light", "zen-dark", "neon", "learn", "blue", "green", "red" ]

# The color variants used for auto mode.
# Default: [ "relearn-light", "relearn-dark" ], overwritten by the first
# two non-auto options from themeVariant if existant.
# The auto variant defines how your site adjusts to your selected OS settings
# for light/dark mode. The first array element is the variant for light mode,
# the second for dark mode.
themeVariantAuto = [ "relearn-light", "relearn-dark" ]

#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# General
# These options are defining general, non visual behavior.

# Avoid new asset URLs on build.
# Default: false
# By default JavaScript-files and CSS-files get a unique ID on each rebuild.
# This makes sure, the user always has the latest version and not some stale
# copy of his browser cache. Anyways, it can be desireable to turn this
# off in certain circumstances. For example if you have Hugo's dev server
# running. Also some proxies dislike this optimization.
disableAssetsBusting = false

# Avoid generator meta tags.
# Default: false
# Set this to true if you want to disable generation for generator meta tags
# of Hugo and the theme in your HTML head. In tihs case also don't forget to
# set Hugo's disableHugoGeneratorInject=true. Otherwise Hugo will generate a
# meta tag into your home page anyways.
disableGeneratorVersion = false

# Generate link URLs the Hugo way.
# Default: false
# If set to true, the theme behaves like a standard Hugo installation and
# appends no index.html to prettyURLs. As a trade off, your build project will
# not be servable from the file system.
disableExplicitIndexURLs = false

# Multilanguage content.
# Default: not set
# If your pages contain further languages besides the main one used, add all
# those auxiliary languages here. This will create a search index with
# support for all used languages of your site.
# This is handy for example if you are writing in Spanish but have lots of
# source code on your page which typically uses English terminology.
additionalContentLanguage = [ "en" ]

#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# Topbar
# These options modify the topbar appearance.

# Hide the table of contents button.
# Default: false
# If the TOC button is hidden, also the keyboard shortcut is disabled.
# This can be overridden in the page's frontmatter.
disableToc = false

# Hide the breadcrumbs.
# Default: false
# If the breadcrumbs are hidden, the title of the displayed page will still be
# shown in the topbar.
disableBreadcrumb = false

# Hide Next and Previous navigation buttons.
# Default: false
# If the navigation buttons are hidden, also the keyboard shortcuts are
# disabled.
disableNextPrev = false

# The URL prefix to edit a page.
# Default: not set
# If set, an edit button will be shown in the topbar. If the button is hidden,
# also the keyboard shortcuts are disabled. The given URL is prepended to the
# relative file path of a the displayed page. The URL must end with a `/`.
# This is useful if you wnat to give the opportunity for people to create merge
#  request for your content.
editURL = "https://github.com/McShelby/hugo-theme-relearn/edit/main/exampleSite/content/"

#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# Menu
# These options modify the menu apperance.

# Hide the search box.
# Default: false
# If the searc box is sisabled, the search functionality is disabled too.
# This will also cause the keyboard shortcut to be disabled and the dedicated
# search page is not linked although it mighty be configured.
disableSearch = false

# Hide the Home entry.
# Default: false
# If shown, a Home button will appear below the search bar and the main menu.
# It links to your the home page of the current language.
disableLandingPageButton = true

# The order of main menu submenus.
# Default: "weight"
# Submenus can be ordered by "weight", "title", "linktitle", "modifieddate",
# "expirydate", "publishdate", "date", "length" or "default" (adhering to
# Hugo's default sort order). This can be overridden in the pages frontmatter.
ordersectionsby = "weight"

# The initial expand state of submenus.
# Default: not set
# This controls whether submenus will be expanded (true), or collapsed (false)
# in the menu. If not set, the first menu level is set to false, all others
# levels are set to true. This can be overridden in the page's frontmatter.
# If the displayed page has submenus, they will always been displayed expanded
# regardless of this option.
alwaysopen = "" # this has the effect as if not set at all

# Shows expander for submenus.
# Default: false
# If set to true, a submenu in the sidebar will be displayed in a collapsible
# tree view and a clickable expander is set in front of the entry.
collapsibleMenu = true

# Shows checkmarks for visited pages of the main menu.
# Default: false
# This also causes the display of the `Clear History` entry in the lower part
# of the menu to remove all checkmarks. The checkmarks will also been removed
# if you regenerate your site as the ids are not stable.
showVisitedLinks = true

# Hide heading above the shortcut menu.
# Default: false
# The title for the heading can be overwritten in your i18n files. See Hugo's
# documentation how to do this.
disableShortcutsTitle = false

# Hide the language switcher.
# Default: false
# If you have more than one language configured, a language switcher is
# displayed in the lower part of the menu. This opition lets you explicitly
# turn this behavior off.
disableLanguageSwitchingButton = false

#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# Hidden pages
# These options configure how hidden pages are treated.
# A page flagged as hidden, is only removed from the main menu but behaves
# like any other page for all other functionality in Hugo.

# Hide hidden pages from search.
# Default: false
# Hides hidden pages from the suggestions of the search box and the dedicated
# search page.
disableSearchHiddenPages = false

# Hide hidden pages for web crawlers.
# Default: false
# Avoids hidden pages from showing up in the sitemap and on Google (et all),
# otherwise they may be indexed by search engines
disableSeoHiddenPages = true

# Hide hidden pages for taxonomies.
# Default: false
# Hides hidden pages from showing up on the taxonomy and terms pages. If this
# reduces term counters to zero, an empty but not linked term page will be
# created anyhow.
disableTagHiddenPages = false

#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# Content
# These options modify how your content is displayed.

# Title separator.
# Default: "::"
# Changes the title separator used when concatenating the page title with the
# site title. This is consistently used throughout the theme.
titleSeparator = "::"

# Breadcrumb separator.
# Default: ">"
# Changes the breadcrumb separator used in the topbars breadcrumb area and for
# search results and term pages.
breadcrumbSeparator = ">"

# Hide the root breadcrumb.
# Default: false
# The root breadcrumb is usually the home page of your site. Because this is
# always accessible by clicking on the logo, you may want to reduce clutter
# by removing this from your breadcrumb.
disableRootBreadcrumb = true

# Hide breadcrumbs term pages.
# Default: false
# If you have lots of taxonomy terms, the term pages may seem cluttered with
# breadcrumbs to you, so this is the option to turn off breadcrumbs on term
# pages. Only the page title will then be shown on the term pages.
disableTermBreadcrumbs = false

# Hide copy-to-clipboard for inline code.
# Default: false
# This removes the copy-to-clipboard button from your inline code.
disableInlineCopyToClipBoard = true

# Always show copy-to-clipboard for block code.
# Default: false
# The theme only shows the copy-to-clipboard button if you hover over the code
# block. Set this to true to disable the hover effect and always show the
# button.
disableHoverBlockCopyToClipBoard = false

#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# Links
# These options configure how links are displayed.

# How to open external links.
# Default: "_blank"
# For external links you can define how they are opened in your browser. All
# values for the HTML `target` attribute of the `a` element are allowed. The
# default value opens external links in a separate browser tab. If you want
# to open those links in the same tab, use "_self".
externalLinkTarget = "_blank"

#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# Images
# These options configure how images are displayed.

# Image effects.
# See the documentation for how you can even add your own arbitrary effects to
# the list.
# All effects can be overridden in the page's frontmatter or thru URL parameter
# given to the image. See the documentation for details.

# Default: false
imageEffects.border = true
# Default: true
imageEffects.lightbox = true
# Default: false
imageEffects.shadow = false

#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# Mermaid
# These options configure how Mermaid graphs are displayed.

# Make graphs panable and zoomable
# Default: false
# For huge graphs it can be helpful to make them zoomable. Zoomable graphs come
# with a reset button for the zoom.
# This can be overridden in the page's frontmatter or given as a parameter to
# individual graphs.
mermaidZoom = true

# Initialization options for Mermaid.
# Default: not set
# A JSON value. See the Mermaid documentation for possible parameter.
# This can be overridden in the page's frontmatter.
mermaidInitialize = "{ \"securityLevel\": \"loose\" }"

# Only load Mermaid if needed.
# Default: true
# If a Mermaid shortcode or codefence is found, the option will be ignored and
# Mermaid will be loaded regardlessly. The option is still useful in case you
# are using scripting to set up your graph. In this case no shortcode or
# codefence is involved and the library is not loaded by default. In this case
# you can set `disableMermaid=false` in your frontmatter to force the library to
# be loaded.
# This can be overridden in the page's frontmatter.
disableMermaid = true

# URL for external Mermaid library.
# Default: not set
# Specifies the remote location of the Mermaid library. By default the shipped
# version will be used.
# This can be overridden in the page's frontmatter.
customMermaidURL = "" # "https://unpkg.com/mermaid/dist/mermaid.min.js"

#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# MathJax
# These options configure how math formulae are displayed.

# Initialization options for MathJax.
# Default: not set
# A JSON value. See the MathJaxdocumentation for possible parameter.
# This can be overridden in the page's frontmatter.
mathJaxInitialize = "{}"

# Only load MathJax if needed.
# Default: true
# If a Math shortcode is found, the option will be ignored and
# MathJax will be loaded regardlessly. The option is still useful in case you
# are using scripting to set up your graph. In this case no shortcode or
# codefence is involved and the library is not loaded by default. In this case
# you can set `disableMathJax=false` in your frontmatter to force the library to
# be loaded.
# This can be overridden in the page's frontmatter.
disableMathJax = true

# URL for external MathJax library.
# Default: not set
# Specifies the remote location of the MathJax library. By default the shipped
# version will be used.
# This can be overridden in the page's frontmatter.
customMathJaxURL = "" # "https://unpkg.com/mathjax/es5/tex-mml-chtml.js"

#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# OpenApi
# These options configure how OpenAPI specifications are displayed.

# Only load OpenAPI if needed.
# Default: true
# If a OpenAPI shortcode is found, the option will be ignored and
# OpenAPI will be loaded regardlessly. The option is still useful in case you
# are using scripting to set up your graph. In this case no shortcode or
# codefence is involved and the library is not loaded by default. In this case
# you can set `disableOpenapi=false` in your frontmatter to force the library to
# be loaded.
# This can be overridden in the page's frontmatter.
disableOpenapi = true

# URL for external OpenAPI library.
# Default: not set
# Specifies the remote location of the OpenAPI library. By default the shipped
# version will be used.
# This can be overridden in the page's frontmatter.
customOpenapiURL = "" # "https://unpkg.com/swagger-ui-dist/swagger-ui-bundle.js"

Serving your page from a subfolder

If your site is served from a subfolder, eg. https://example.com/mysite/, you have to set the following lines to your config.toml

baseURL = "https://example.com/mysite/"
canonifyURLs = true
relativeURLs = true

Without canonifyURLs=true URLs in sublemental pages (like sitemap.xml, rss.xml) will be generated falsly while your HTML files will still work. See https://github.com/gohugoio/hugo/issues/5226.

Serving your page from the filesystem

If you want your page served from the filesystem by using URLs starting with file:// you’ll need the following configuration in your config.toml:

relativeURLs = true

The theme will append an additional index.html to all branch bundle links by default to make the page be servable from the file system. If you don’t care about the file system and only serve your page via a webserver you can also generate the links without this change by adding this to your config.toml

[params]
  disableExplicitIndexURLs = true
Note

If you want to use the search feature from the file system using an older installation of the theme make sure to change your outputformat for the homepage from the now deprecated JSON to SEARCH as seen below.

If not already present, add the following lines in the same config.toml file.

[outputs]
  home = ["HTML", "RSS", "SEARCH"]

This will generate a search index file at the root of your public folder ready to be consumed by the Lunr search library. Note that the SEARCH outputformat was named JSON in previous releases but was implemented differently. Although JSON still works, it is now deprecated.

Activate dedicated search page

You can add a dedicated search page for your page by adding the SEARCHPAGE outputformat to your home page by adding the following lines in your config.toml file. This will cause Hugo to generate a new file http://example.com/mysite/search.html.

[outputs]
  home = ["HTML", "RSS", "SEARCH", "SEARCHPAGE"]

You can access this page by either clicking on the magnifier glass or by typing some search term and pressing ENTER inside of the menu’s search box .

Screenshot of the dedicated search page Screenshot of the dedicated search page

Note

To have Hugo create the dedicated search page successfully, you must not generate the URL http://example.com/mysite/search.html from your own content. This can happen if you set uglyURLs=true in your config.toml and defining a Markdown file content/search.md.

To make sure, there is no duplicate content for any given URL of your project, run hugo --printPathWarnings.

Activate print support

You can activate print support to add the capability to print whole chapters or even the complete site. Just add the PRINT output format to your home, section and page in your config.toml as seen below:

[outputs]
  home = ["HTML", "RSS", "PRINT", "SEARCH"]
  section = ["HTML", "RSS", "PRINT"]
  page = ["HTML", "RSS", "PRINT"]

This will add a little printer icon in the top bar. It will switch the page to print preview when clicked. You can then send this page to the printer by using your browser’s usual print functionality.

Note

The resulting URL will not be configured ugly in terms of Hugo’s URL handling even if you’ve set uglyURLs=true in your config.toml. This is due to the fact that for one mime type only one suffix can be configured.

Nevertheless, if you’re unhappy with the resulting URLs you can manually redefine outputFormats.PRINT in your own config.toml to your liking.

MathJax

The MathJax configuration parameters can also be set on a specific page. In this case, the global parameter would be overwritten by the local one. See Math for additional documentation.

Example

MathJax is globally disabled. By default it won’t be loaded by any page.

On page “Physics” you coded some JavaScript for a dynamic formulae. You can set the MathJax parameters locally to load mathJax on this page.

You also can disable MathJax for specific pages while globally enabled.

Mermaid

The Mermaid configuration parameters can also be set on a specific page. In this case, the global parameter would be overwritten by the local one. See Mermaid for additional documentation.

Example

Mermaid is globally disabled. By default it won’t be loaded by any page.

On page “Architecture” you coded some JavaScript to dynamically generate a class diagram. You can set the Mermaid parameters locally to load mermaid on this page.

You also can disable Mermaid for specific pages while globally enabled.

Home Button Configuration

If the disableLandingPageButton option is set to false, a Home button will appear on the left menu. It is an alternative for clicking on the logo. To edit the appearance, you will have to configure two parameters for the defined languages:

[languages]
[languages.en]
...
[languages.en.params]
landingPageName = "<i class='fas fa-home'></i> Home"
...
[languages.pir]
...
[languages.pir.params]
landingPageName = "<i class='fas fa-home'></i> Arrr! Homme"
...

If those params are not configured for a specific language, they will get their default values:

landingPageName = "<i class='fas fa-home'></i> Home"

The home button is going to look like this:

Default Home Button Default Home Button

Social Media Meta Tags

You can add social media meta tags for the Open Graph protocol and Twitter Cards to your site. These are configured as mentioned in the Hugo docs.